212349009 has 8 divisors (see below), whose sum is σ = 283642560. Its totient is φ = 141310736.

The previous prime is 212348971. The next prime is 212349013. The reversal of 212349009 is 900943212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212349009 - 2¹⁶ = 212283473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212349029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61869 + ... + 65210.

It is an arithmetic number, because the mean of its divisors is an integer number (35455320).

Almost surely, 2^212349009 is an apocalyptic number.

It is an amenable number.

212349009 is a deficient number, since it is larger than the sum of its proper divisors (71293551).

212349009 is a wasteful number, since it uses less digits than its factorization.

212349009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127639.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 212349009 is about 14572.1998682423. The cubic root of 212349009 is about 596.6002250469.

The spelling of 212349009 in words is "two hundred twelve million, three hundred forty-nine thousand, nine".